| article html file updated | 9 February 2020 03:20 CET | Update | https://www.mdpi.com/2297-8747/23/1/4 |
| article html file updated | 2 May 2019 01:41 CEST | Update | - |
| article html file updated | 17 April 2019 23:59 CEST | Update | - |
| article html file updated | 28 March 2019 16:12 CET | Update | - |
| article html file updated | 17 January 2018 08:02 CET | Original file | - |
| article xml uploaded. | 17 January 2018 08:01 CET | Update | https://www.mdpi.com/2297-8747/23/1/4/xml |
| article xml uploaded. | 17 January 2018 08:01 CET | Original file | - |
| article pdf uploaded. | 17 January 2018 08:01 CET | Version of Record | https://www.mdpi.com/2297-8747/23/1/4/pdf |
